The mathematic concept of ? (Pi) has an heir of the abstract to it, largely due to its infinite number of decimal places. Now artist ISHKY plans to bring ? to the air of San Francisco, in what will be “the largest ephemeral art installation in the world, taking place in the San Francisco Bay area as well as outer space. It is scheduled to appear in the sky above the Bay Area between Sept. 12 and 16.”

Aside from the artist value, I’m always dubious about the “largest” anything for environmental values (especially when I don’t get to experience it here in London!). Is size for size’s sake a relic of the oil-era?  Well, ISHKY has thought about this, and explained that the planes used are small single-engine airplanes, which get the same MPG as a large pickup truck. The pi numbers will be made of burnt-off all natural canola oil and will dissipate in the atmosphere causing no harm and leaving no remnants. So at least we’re cool on that, yo?